<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags always come first -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta http-equiv="x-ua-compatible" content="ie=edge">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="./bootstrap.css">
  </head>
  <body>
    <h1>Hello, world!</h1>
<a class="btn btn-primary" href="#" role="button">Link</a>
<button class="btn btn-primary" type="submit">Button</button>
<input class="btn btn-primary" type="button" value="Input">
<input class="btn btn-primary" type="submit" value="Submit">

    <!-- jQuery first, then Bootstrap JS. -->
    <script src="./jquery.min.js"></script>
    <script src="./bootstrap.js"></script>
  </body>
</html>